.activity {
    width: 100%;
    height: 100%;
  }
  
  .activity .center {
    display: flex;
    justify-content: space-between;
    /* background-color: #f4f8fb; */
    width: 100%;
  }
  
  
  .center-r{
    width: 100%;
    /* padding: 30px 0 0 30px; */
    padding-left: 30px;
    background-color: #f4f8fb;
    margin-top: 56px;
  }
  .center-r .box{
    background-color: #fff;
  }
  .box-nav{
    width: 100%;
    height: 65px;
    border-bottom: 2px solid #ccc;
    margin-left: 12px;
    color: #999;
  }
  .box-nav>img{
     margin-top: -10px;
  }
  .box-nav>span{
    font: 24px/65px "微软雅黑";
    
  }
  .box-center{
    margin: 54px 0 0 54px;
  }
  .box-center .notice{
    font: 20px/66px "微软雅黑";
    border-bottom: 1px solid #ccc;
    padding-left: 50px;
  }
  .box-center .notice>span{
    color: #666;
  }
  .box-center .notice .blue{
    margin-left: 20px;
    color: #3da4ff;
  }
  